Having owned this for 18 months, I can confirm that the sound truly is impressive. A good indication of a superior quality audio speaker is if the deep bass remains still, even at low levels, and the Ultimate certainly does. It has pretty much all the volume you could want too, for most homes anyway, and a nice clarity to the sound also. The bass remains strong, even at higher levels.
My only gripe is the Bluetooth connectivity - ever since owning it I’ve had to perform a ‘factory reset’, roughy every 2 or 3 months, because the Ultimate will suddenly and unexpectedly lose connection, and you’re unable to find the device you were just connected to again! I always have used the ‘connect to last device’ option, having always played my media via my iPad only, but that makes no difference either; the Ultimate still won’t find the device again, until you factory reset.
You can save your settings for the lights and the top panel, and of course having to factory reset the Ultimate loses all of them, so you have to redo them every time.